新外研版初中英语八下Unit6语法专项 宾语从句课件

这是一份新外研版初中英语八下Unit6语法专项 宾语从句课件，共32页。
教学课件外研英语八年级下册 Unit 6语法专项—— 宾语从句（what/where/how/why/when引导） 全解精讲+分层练习学习目标理解what/where/how/why/when引导的宾语从句本质掌握五类引导词的含义、用法及适用场景牢记宾语从句“陈述语序”和“时态一致”两大核心规则能正确选用引导词，完成各类句式转换和习题结合主题语境，灵活运用宾语从句表达疑问信息宾语从句基础回顾复合句中，充当主句宾语的句子称为宾语从句本单元重点：连接代词what和连接副词where/how/why/when核心用途：表达“什么/哪里/如何/为什么/何时”的疑问信息与Unit5区别：本单元引导词有实际含义，且在从句中充当成分核心原则：引导词不省略、从句用陈述语序核心引导词整体认知连接代词：what（表“什么”），在从句中作主语、宾语或表语连接副词：where（哪里）、how（如何）、why（为什么）、when（何时）连接副词均在从句中作状语，分别对应地点、方式、原因、时间所有引导词均有实际含义，不可省略贴合主题：多用于询问自然相关的疑问，如河流源头、气候变化等引导词用法对比表（一）引导词用法对比表（二）重点提醒：成分不同，用法不同，需结合语境判断引导词所有引导词均不能省略，避免语法错误 what引导的宾语从句·核心用法what是连接代词，有“什么”的实际含义在宾语从句中必须充当成分：主语、宾语或表语适用场景：询问事物的具体内容、性质或情况从句需用陈述语序，不可用疑问语序贴合主题：常用于询问自然相关的事物，如24节气、环保措施等what引导的宾语从句·例句与拓展1. I don't know what we can do to protect nature.（作宾语）2. They told me what the 24 Solar Terms are.（作宾语）3. She asked what is harmful to wild animals.（作主语）拓展：what可搭配名词，如what kind of（哪种），贴合自然主题例：He wondered what kind of plants grow in the desert.where引导的宾语从句·核心用法where是连接副词，表“哪里、在何处”，有实际含义在宾语从句中作地点状语，修饰从句中的谓语动词适用场景：询问人或事物的具体位置、地点从句必须用陈述语序，疑问词where后接主语+谓语贴合主题：常用于询问自然相关地点，如自然保护区、河流源头等where引导的宾语从句·例句与拓展1. She asked where the nature reserve is.（询问保护区位置）2. We need to find where the river starts.（询问河流源头）3. I don't know where wild pandas live.（询问熊猫栖息地）拓展：where可用于引导地点相关的疑问，回答需明确地点注意：不可遗漏从句中的be动词或谓语动词how引导的宾语从句·核心用法how是连接副词，表“如何、怎样”，有实际含义在宾语从句中作方式状语，修饰谓语动词，表动作的方式也可表“多么”，修饰形容词/副词，表程度适用场景：询问做某事的方法、方式，或事物的程度从句用陈述语序，how后直接接主语+谓语how引导的宾语从句·例句与拓展1. He explained how we can live in harmony with nature.（表方式）2. I didn't know how popular the nature paintings would become.（表程度）3. Can you tell me how to protect the environment?（后接不定式）拓展：how可搭配many/much/long等，如how many trees（多少棵树）贴合主题：多用于询问环保方法、自然现象的程度why引导的宾语从句·核心用法why是连接副词，表“为什么”，有实际含义在宾语从句中作原因状语，回答用because引导的句子适用场景：询问事情的原因、理由，探究背后的逻辑从句用陈述语序，why后接主语+谓语，不可颠倒贴合主题：常用于询问自然现象的原因，如气候变化、动植物习性等why引导的宾语从句·例句与拓展1. We want to know why the climate is changing so fast.（询问气候变化原因）2. They help people understand why nature works this way.（询问自然运作原因）3. She asked why we should protect wild animals.（询问保护动物的原因）拓展：回答时用because，不可用so，避免逻辑错误例：I don't know why he came late. Because he missed the bus.when引导的宾语从句·核心用法when是连接副词，表“何时、什么时候”，有实际含义在宾语从句中作时间状语，修饰从句中的谓语动词适用场景：询问具体的时间、时刻或时间段从句用陈述语序，when后接主语+谓语，不可用疑问语序贴合主题：常用于询问自然相关的时间，如樱花开放、降雨时间等when引导的宾语从句·例句与拓展1. Can you tell me when the next rain will come?（询问降雨时间）2. She wondered when the cherry blossoms would bloom.（询问开花时间）3. He told me when they would plant trees this weekend.（询问植树时间）拓展：when可与将来时、过去时连用，需结合主句时态调整注意：区分when引导的宾语从句与时间状语从句宾语从句核心规则·陈述语序（重点）核心要求：无论主句是陈述句还是疑问句宾语从句必须使用“主语+谓语”的陈述语序错误形式：疑问词 + 助动词/系动词 + 主语（疑问语序）正确形式：疑问词 + 主语 + 助动词/系动词（陈述语序）这是本单元必考考点，做题时先判断语序是否正确语序规则·错误与正确对比1. 错误：He asked how can we protect the forest. 正确：He asked how we can protect the forest.2. 错误：Do you know where is the river source? 正确：Do you know where the river source is?3. 错误：I wonder why is the sky blue. 正确：I wonder why the sky is blue.宾语从句核心规则·时态一致规则1：主句为一般现在时，从句时态根据实际语境确定（可用于一般现在时、一般将来时、现在完成时等）规则2：主句为过去时态（一般过去时、过去进行时）从句需用过去的某种时态（一般过去时、过去将来时等）规则3：从句为客观真理、永恒事实，时态始终用一般现在时时态一致·例句解析1. 主句现在时：I know where the nature reserve is.（从句现在时）2. 主句过去时：She asked where the nature reserve was.（从句过去时）3. 客观真理：He told us why the earth goes around the sun.（从句现在时）拓展：即使主句是过去时，客观真理的时态也不改变贴合主题：自然规律、节气知识均属于客观真理易混点辨析·引导词的选择技巧第一步：判断从句中缺少的成分（主语/宾语/状语）缺少主语/宾语/表语 → 用what缺少地点状语 → 用where；缺少方式状语 → 用how缺少原因状语 → 用why；缺少时间状语 → 用when第二步：结合语境，确认引导词的含义是否贴合句意第三步：验证从句语序和时态是否正确易混点辨析·what与how的区别what在从句中作成分（主语/宾语），表“什么”例：I don't know what we can do.（what作do的宾语）how在从句中作状语（方式/程度），表“如何”例：I don't know how we can do it.（how作do的方式状语）关键区分：看从句中是否有宾语，有宾语用how，无宾语用what练习一·引导词填空 1. I don't know ___________ we can protect wild animals. 2. She asked ___________ the river source is located. 3. Can you tell me ___________ the 24 Solar Terms mean? 4. We want to know ___________ the climate is getting warmer. 5. He wondered ___________ the cherry blossoms would open. 6. Please tell me ___________ you will go to the nature reserve. howwherewhatwhywhenwhen练习二·引导词填空1. They explained ___________ kind of plants grow in the desert. 2. I'm not sure ___________ we can reduce plastic pollution. 3. Do you know ___________ the Maori use different words for the sea? 4. She asked ___________ we can find fresh water in the forest. 5. He told me ___________ they would start the field trip. 6. We need to find out ___________ is harmful to the environment. whathowwhywherewhenwhat练习三·句型转换（合并句子）1. Where is the nature reserve? We need to find out.→ We need to find out ___________ the nature reserve is.2. How can we live in harmony with nature? He told us.→ He told us ___________ we can live in harmony with nature.3. What are the 24 Solar Terms? They explained to me.→ They explained to me ___________ the 24 Solar Terms are.wherehowwhat练习四·句型转换（直接引语变间接引语）1. "When will the next rain come?" she asked me.→ She asked me ___________ the next rain would come.2. "Why is the climate changing so fast?" the scientist said.→ The scientist said ___________ the climate was changing so fast.3. "What can we do to protect the earth?" he asked.→ He asked ___________ they could do to protect the earth.whenwhywhat练习五·单项选择 1. I don't know ___________ we can do to save endangered animals. A. what B. where C. how D. why2. She asked ___________ the nature reserve is. A. what B. where C. when D. how3. Can you tell me ___________ the cherry blossoms will bloom? A. what B. why C. when D. howABC练习六·单项选择 1. He explained ___________ we can reduce plastic waste in daily life. A. what B. how C. why D. when2. Do you know ___________ the Maori used different words for the sea? A. what B. where C. why D. when3. I'm not sure ___________ is the most important thing to protect nature. A. what B. where C. how D. whenBCA练习七·单句改错1. I don't know where is the source of the river.2. She asked why did the climate change so fast.3. He told me what can we do to protect the forest.4. Do you know how popular is the nature park?5. We want to know when will the next snow come.is the source of the water→ the source of the river isdid the climate change so fast→ the climate changed so fast can we → we canis the nature park → the nature park iswill the next snow → the next snow will练习八·情景对话补全1. A: Can you tell me ___________ we can protect the environment? B: We can plant more trees and reduce plastic use.2. A: I'm not sure ___________ the nature reserve is located. B: It's in the south of our city, near the mountain.3. A: Do you know ___________ the cherry blossoms will bloom? B: They will bloom in March, when the weather gets warm.howwherewhen课堂小结本单元重点：what/where/how/why/when引导的宾语从句核心要点1：引导词有实际含义，在从句中充当成分，不可省略核心要点2：从句必须用“主语+谓语”的陈述语序核心要点3：时态一致，客观真理始终用一般现在时解题技巧：先判成分选引导词，再查语序和时态贴合主题，灵活运用从句表达自然相关的疑问教学课件 Unit 6语法专项—— 宾语从句（what/where/how/why/when引导）Thank you for listening!